838281066 has 16 divisors (see below), whose sum is σ = 1916071104. Its totient is φ = 239508864.

The previous prime is 838281043. The next prime is 838281079. The reversal of 838281066 is 660182838.

It is a super-2 number, since 2×838281066² = 1405430291228192712, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 19959073 = 838281066 / (8 + 3 + 8 + 2 + 8 + 1 + 0 + 6 + 6).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9979495 + ... + 9979578.

It is an arithmetic number, because the mean of its divisors is an integer number (119754444).

Almost surely, 2^838281066 is an apocalyptic number.

838281066 is an abundant number, since it is smaller than the sum of its proper divisors (1077790038).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

838281066 is a wasteful number, since it uses less digits than its factorization.

838281066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19959085.

The product of its (nonzero) digits is 110592, while the sum is 42.

The square root of 838281066 is about 28953.0838771969. The cubic root of 838281066 is about 942.8947530124.

The spelling of 838281066 in words is "eight hundred thirty-eight million, two hundred eighty-one thousand, sixty-six".